Gold Roger was known as the "Pirate King," the strongest and most infamous being to have sailed the Grand Line. The capture and execution of Roger by the World Government brought a change throughout the world. His last words before his death revealed the existence of the greatest treasure in the world, One Piece. It was this revelation that brought about the Grand Age of Pirates, men who dreamed of finding One Piece—which promises an unlimited amount of riches and fame—and quite possibly the pinnacle of glory and the title of the Pirate King. Enter Monkey Luffy, a 17-year-old boy who defies your standard definition of a pirate. Rather than the popular persona of a wicked, hardened, toothless pirate ransacking villages for fun, Luffy's reason for being a pirate is one of pure wonder: the thought of an exciting adventure that leads him to intriguing people and ultimately, the promised treasure. Following in the footsteps of his childhood hero, Luffy and his crew travel across the Grand Line, experiencing crazy adventures, unveiling dark mysteries and battling strong enemies, all in order to reach the most coveted of all fortunes—One Piece. [Written by MAL Rewrite]

Dr. Slump creates a little android girl, Arale, who is very stong, happy, and totally common senseless. They live in Penguin Village where the strangest things happen (e.g., the dawn is announced by a little pig wearing a basquee). (Source: ANN)

A spin-off series of focusing on Seishirou Nagi.

At the age of seven, the very short-lived child prodigy, who was growing too fast, returned to the immortal world to prevent his abnormal growing. From then on, with his gifted brain and wisdom he obtained from earth, he walked in path immortality to became the legendary god to return his normal life... (Source: MU)